词汇	national input
释义	national input 全国投入量
随便看	mechanical experiment in vitro mechanical experiments Mechanical experiments of senior high school mechanical expiratory flow volume curve mechanical explanation mechanical exploration mechanical expression mechanical extraction mechanical extrusion mechanical fabrics mechanical face seal mechanical face seals mechanical facilities mechanical facility mechanical factor mechanical factor of merit Mechanical factors mechanical factors bone changes mechanical failing load mechanical failure mechanical failu re Mechanical Failure Diagnosis mechanical failure load mechanical failure of prosthetic valve mechanical fastening